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sparse-architectures
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Step 3.5 Flash – Open-source foundation model, supports deep reasoning at speed
tool
16 min read
Step 3.5 Flash is an open-source foundation model designed for advanced reasoning and agentic capabilities. Utilizing a sparse Mixture of Experts (MoE) architecture, it activates only 11B of its 196B parameters per token, enabling high intelligence density and real-time interaction.